Pauli gives his reactions to Schwinger's work, news about Heitler and Staub and lecture plans.

Pauli thanks Jauch for Jauch's and Rohrlich's book and says that he likes it. He gives some comments on a few passages. He writes about recent publications on field quantization.

Pauli thinks that Lopes' results on the interaction energy-matrix in momentum space are correct. He comments on a paper by Schönberg. He agrees to Jauch's plan to work on the life-time of isobars. He writes about recent results of investigations in Sweden.

Pauli mentions the recent results about the magnetic moment of the free neutron and adds a lengthy theoretical comment to this.

Pauli is looking forward to reading Jauch's forthcoming book on electrodynamics. He would prefer not to read the book in the proof-state, for this means a certain responsibility.

Pauli discusses the properties of spin matrices and efforts toward a quantum electrodynamics.

Pauli asks Jordan to send his cosmological works to Prof. Lichnerowicz at Strasbourg. He writes about Jung's interest in parapsychology. He has a negative opinion about a book by an American psychologist, E White, on the "Unobstructed Universe".

Pauli replies to a letter about affine field theory. Pauli explains why the unity of field theory is impossible, because the reduced curvature tensor splits into a symmetrical and antisymmetrical part, which can never be brought together again.

Pauli writes on additional calculations about Jordan's theory of gravitational constant.

Pauli gives some details about the confor-transformations in Jordan's field equations.